STS9, Beats Antique and Papadosio are among the latest additions to Chicago’s North Coast Music Festival. The late summer festival will take place in Chicago’s Union Park from August 31-September 2. The festival’s third and final wave of artist additions also includes: Pretty Lights Music recording artist and producer Gramatik, dubstep monster Minnesota, hip hop duo Two Fresh, Chicago’s own Midnight Conspiracy and Brainfeeder bass virtuoso Thundercat. These acts join a lineup that already includes: Pretty Lights, Girl Talk, Umphrey’s McGee, Axwell, Steve Angello, Knife Party, Atmosphere, Steve Aoki, Excision Alesso, Paul Oakenfold, Big Boi, The Rapture, EOTO and many others.